{"id":393689,"date":"2024-11-12T03:24:04","date_gmt":"2024-11-12T03:24:04","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/result-variation-in-2029r3-and-2023r1\/"},"modified":"2024-11-12T11:26:43","modified_gmt":"2024-11-12T11:26:43","slug":"result-variation-in-2029r3-and-2023r1","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/result-variation-in-2029r3-and-2023r1\/","title":{"rendered":"Result variation in 2019R3 and 2023R1."},"content":{"rendered":"<p>&lt;p&gt;&lt;p&gt;Previously, I developed a VOF-based multiphase model to simulate the bubble rise in a hot liquid along with a solidification submodel. The gas density was calculated from the Ideal Gas law. I used adaption meshing in a particular region to get the fine mesh. I used the 2019R3 version of Fluent and got the expected result. However, I am running the same simulation (without modifying anything. Using the same case and data file as before) using the 2023R1 version of Fluent and the bubble is moving down instead of rising.&nbsp;&lt;\/p&gt;&lt;p&gt;I am not sure why getting this unexpected result.&lt;\/p&gt;&lt;p&gt;Please note that when I change the density (gas&mdash;secondary phase) from the Ideal gas law to a constant, the bubble rises.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Sharing your thoughts on resolving the issue would greatly help me.&lt;\/p&gt;&lt;p&gt;Thanks.&lt;\/p&gt;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-393689","topic","type-topic","status-publish","hentry","topic-tag-adaptivemesh-1","topic-tag-density","topic-tag-ideal-gas-law","topic-tag-multifluid-vof-1","topic-tag-solidification","topic-tag-vof-model"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Previously, I developed a VOF-based multiphase model to simulate the bubble rise in a hot liquid along with a solidification submodel. 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